java.lang.IllegalStateException:没有活动 [英] java.lang.IllegalStateException: No activity
问题描述
我要建一个Android应用程序,对此我想2个选项卡,一个用于用户的配置文件,一个是朋友的活动我的第一项活动组成。对于这些标签,我选择了,因为我的福尔摩斯操作栏TabHost已经使用列表导航移动到其他的活动,所以我不能使用标签导航操作栏中。
该应用程序工作了一段时间,但现在只有我的一个标签的作品,当我尝试移动到第二个选项卡,我得到一个java.lang.IllegalStateException:没有活动
我添加了logcat的输出这个错误,虽然我不知道它帮助,因为没有一丝回到我的code。
我试图用FragmentTabHost更换TabHost,但错误依然存在...
任何人都可以亲切地指出我的这个错误的根源/意思?在此先感谢!
logcat的:
8月四号至3日:19:39.380:W / dalvikvm(958):主题ID = 1:螺纹退出与未捕获的异常(组= 0x40a71930)
8月4日至3号:19:39.400:E / AndroidRuntime(958):致命异常:主要
8月4日至3号:19:39.400:E / AndroidRuntime(958):java.lang.IllegalStateException:没有活动
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1075)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1070)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1861)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1474)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.support.v4.app.FragmentManagerImpl $ 1.运行(FragmentManager.java:429)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.os.Handler.handleCallback(Handler.java:725)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.os.Handler.dispatchMessage(Handler.java:92)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.os.Looper.loop(Looper.java:137)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在android.app.ActivityThread.main(ActivityThread.java:5041)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在java.lang.reflect.Method.invokeNative(本机方法)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在java.lang.reflect.Method.invoke(Method.java:511)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:793)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
8月4日至3号:19:39.400:E / AndroidRuntime(958):在dalvik.system.NativeStart.main(本机方法)
活动
公共类HomeActivity扩展SherlockFragmentActivity实现ActionBar.OnNavigationListener {
民营动作条mActionBar;
私人TabHost托斯特;
@覆盖
公共无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.home_activity_layout);
//设置在动作条列表导航
mActionBar = getSupportActionBar();
上下文的背景下= getSupportActionBar()getThemedContext()。
ArrayAdapter< CharSequence的>表= ArrayAdapter.createFromResource(背景下,R.array.list_menu_items,R.layout.sherlock_spinner_item);
list.setDropDownViewResource(R.layout.sherlock_spinner_dropdown_item);
mActionBar.setDisplayShowTitleEnabled(假);
mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
mActionBar.setListNavigationCallbacks(列表中,这一点);
//设置与TabHost子导航
托斯特=(TabHost)findViewById(android.R.id.tabhost);
tHost.setup();
/ **定义标签生成器配置文件选项卡* /
TabHost.TabSpec tabSpecProfile = tHost.newTabSpec(个人资料);
tabSpecProfile.setIndicator(档案);
tabSpecProfile.setContent(新TabContentMaker(本));
tHost.addTab(tabSpecProfile);
/ **定义标签制造商为社区标签* /
TabHost.TabSpec tabSpecCommunity = tHost.newTabSpec(社会);
tabSpecCommunity.setIndicator(共同体);
tabSpecCommunity.setContent(新TabContentMaker(本));
tHost.addTab(tabSpecCommunity);
/ **定义标签更改监听事件。这个被调用时,标签被改变* /
TabHost.OnTabChangeListener tabChangeListener = getOnTabChangeListener();
/ **设置tabchangelistener的标签* /
tHost.setOnTabChangedListener(tabChangeListener);
}
@覆盖
公共布尔onNavigationItemSelected(INT itemPosition,长的itemId){
//改变活动在这里
返回true;
}
私人TabHost.OnTabChangeListener getOnTabChangeListener(){
TabHost.OnTabChangeListener tabChangeListener =新TabHost.OnTabChangeListener(){
@覆盖
公共无效onTabChanged(字符串tabId){
android.support.v4.app.FragmentManager FM = getSupportFragmentManager();
MyProfileFragment profileFragment =(MyProfileFragment)fm.findFragmentByTag(个人资料);
CommunityFeedFragment communityFragment =(CommunityFeedFragment)fm.findFragmentByTag(社会);
android.support.v4.app.FragmentTransaction英尺= fm.beginTransaction();
/ **会分离profileFragment是否存在* /
如果(profileFragment!= NULL)
ft.detach(profileFragment);
/ **会分离communityFragment是否存在* /
如果(communityFragment!= NULL)
ft.detach(communityFragment);
/ **如果当前选项卡的资料* /
如果(tabId.equalsIgnoreCase(档案)){
如果(profileFragment == NULL){
/ **创建MyProfileFragment并加入到fragmenttransaction * /
ft.add(R.id.realtabcontent,新MyProfileFragment(),配置文件);
}其他{
/ **把到前,如果已经存在于fragmenttransaction * /
ft.attach(profileFragment);
}
}其他{/ **如果当前选项卡为社区* /
如果(communityFragment == NULL){
/ **创建CommunityFragment并加入到fragmenttransaction * /
ft.add(R.id.realtabcontent,新CommunityFeedFragment(),社区);
}其他{
/ **把到前,如果已经存在于fragmenttransaction * /
ft.attach(communityFragment);
}
}
ft.commit();
}
};
返回tabChangeListener;
}
Android清单
< XML版本=1.0编码=UTF-8&GT?;
<舱单的xmlns:机器人=http://schemas.android.com/apk/res/android
包=com.enlavertical
安卓版code =1
机器人:VERSIONNAME =1.0>
<用途-SDK
安卓的minSdkVersion =8
机器人:targetSdkVersion =17/>
<应用
机器人:allowBackup =真
机器人:图标=@可绘制/ ic_launcher
机器人:标签=@字符串/ APP_NAME
机器人:主题=@风格/ Theme.Styled>
<活动
机器人:名称=com.enlavertical.HomeActivity
机器人:标签=@字符串/ APP_NAME
机器人:screenOrientation =画像>
<意向滤光器>
<作用机器人:名称=android.intent.action.MAIN/>
<类机器人:名称=android.intent.category.LAUNCHER/>
&所述; /意图滤光器>
< /活性GT;
< /用途>
< /舱单>
终于发现那位什么,这是关于:不活动的崩溃是因为,我使用的是错误的FragmentManager窝片段的事实。对于嵌套片段,唯一有效的FragmentManager在含有片段获得,通过调用<一个一href="http://developer.android.com/reference/android/app/Fragment.html#getChildFragmentManager%28%29">getChildFragmentManager().
I'm building an Android app for which I'd like my first activity to be composed of 2 tabs, one for the user's profile, and one for the friends' activity. For these tabs, I opted for a TabHost since my Sherlock Action Bar is already using list navigation to move to other activities so I can't use tab navigation from the action bar.
The app worked for a while, but now only one of my tabs works, as soon as I try to move to the second tab, I'm getting a java.lang.IllegalStateException: No activity
I added the Logcat output for this error, although I'm not sure it helps since there is no trace back to my code.
I tried replacing the TabHost with a FragmentTabHost, but the error persists...
Can anyone kindly point me to the origin/meaning of this error ? Thanks in advance !
LOGCAT :
04-03 08:19:39.380: W/dalvikvm(958): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
04-03 08:19:39.400: E/AndroidRuntime(958): FATAL EXCEPTION: main
04-03 08:19:39.400: E/AndroidRuntime(958): java.lang.IllegalStateException: No activity
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1075)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1070)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1861)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1474)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:931)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:429)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.os.Handler.handleCallback(Handler.java:725)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.os.Handler.dispatchMessage(Handler.java:92)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.os.Looper.loop(Looper.java:137)
04-03 08:19:39.400: E/AndroidRuntime(958): at android.app.ActivityThread.main(ActivityThread.java:5041)
04-03 08:19:39.400: E/AndroidRuntime(958): at java.lang.reflect.Method.invokeNative(Native Method)
04-03 08:19:39.400: E/AndroidRuntime(958): at java.lang.reflect.Method.invoke(Method.java:511)
04-03 08:19:39.400: E/AndroidRuntime(958): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-03 08:19:39.400: E/AndroidRuntime(958): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-03 08:19:39.400: E/AndroidRuntime(958): at dalvik.system.NativeStart.main(Native Method)
ACTIVITY
public class HomeActivity extends SherlockFragmentActivity implements ActionBar.OnNavigationListener {
private ActionBar mActionBar;
private TabHost tHost;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home_activity_layout);
//Setting the list navigation on actionBar
mActionBar = getSupportActionBar();
Context context = getSupportActionBar().getThemedContext();
ArrayAdapter<CharSequence> list = ArrayAdapter.createFromResource(context, R.array.list_menu_items, R.layout.sherlock_spinner_item);
list.setDropDownViewResource(R.layout.sherlock_spinner_dropdown_item);
mActionBar.setDisplayShowTitleEnabled(false);
mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
mActionBar.setListNavigationCallbacks(list, this);
//Setting the subnavigation with TabHost
tHost = (TabHost) findViewById(android.R.id.tabhost);
tHost.setup();
/** Defining tab builder for profile tab */
TabHost.TabSpec tabSpecProfile = tHost.newTabSpec("profile");
tabSpecProfile.setIndicator("PROFILE");
tabSpecProfile.setContent(new TabContentMaker(this));
tHost.addTab(tabSpecProfile);
/** Defining tab builder for community tab */
TabHost.TabSpec tabSpecCommunity = tHost.newTabSpec("community");
tabSpecCommunity.setIndicator("COMMUNITY");
tabSpecCommunity.setContent(new TabContentMaker(this));
tHost.addTab(tabSpecCommunity);
/** Defining Tab Change Listener event. This is invoked when tab is changed */
TabHost.OnTabChangeListener tabChangeListener = getOnTabChangeListener();
/** Setting tabchangelistener for the tab */
tHost.setOnTabChangedListener(tabChangeListener);
}
@Override
public boolean onNavigationItemSelected(int itemPosition, long itemId) {
//changing activity here
return true;
}
private TabHost.OnTabChangeListener getOnTabChangeListener(){
TabHost.OnTabChangeListener tabChangeListener = new TabHost.OnTabChangeListener() {
@Override
public void onTabChanged(String tabId) {
android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
MyProfileFragment profileFragment = (MyProfileFragment) fm.findFragmentByTag("profile");
CommunityFeedFragment communityFragment = (CommunityFeedFragment) fm.findFragmentByTag("community");
android.support.v4.app.FragmentTransaction ft = fm.beginTransaction();
/** Detaches the profileFragment if exists */
if(profileFragment!=null)
ft.detach(profileFragment);
/** Detaches the communityFragment if exists */
if(communityFragment!=null)
ft.detach(communityFragment);
/** If current tab is profile */
if(tabId.equalsIgnoreCase("profile")){
if(profileFragment==null){
/** Create MyProfileFragment and adding to fragmenttransaction */
ft.add(R.id.realtabcontent,new MyProfileFragment(), "profile");
}else{
/** Bring to the front, if already exists in the fragmenttransaction */
ft.attach(profileFragment);
}
}else{ /** If current tab is community */
if(communityFragment==null){
/** Create CommunityFragment and adding to fragmenttransaction */
ft.add(R.id.realtabcontent,new CommunityFeedFragment(), "community");
}else{
/** Bring to the front, if already exists in the fragmenttransaction */
ft.attach(communityFragment);
}
}
ft.commit();
}
};
return tabChangeListener;
}
ANDROID MANIFEST
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.enlavertical"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/Theme.Styled" >
<activity
android:name="com.enlavertical.HomeActivity"
android:label="@string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Finally fount out what this was about : the "no activity" crash was due to the fact that I was using a wrong FragmentManager to nest fragments. For nested fragments, the only valid FragmentManager is the one obtained in the containing Fragment, by calling getChildFragmentManager().
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